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2027 International Mechanical Code

Chapter 11Refrigeration

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Question 1 1.

A refrigeration system utilizing carbon dioxide (R-744) as the refrigerant is being installed in a cold storage facility. In addition to the International Mechanical Code, which specific standard must this installation comply with?

Question 2 2.

Which standard governs the design of refrigeration systems using ammonia refrigerant?

Question 3 3.

Under Table 1101.2, factory-built commercial refrigerators, freezers, and walk-in coolers must be tested in accordance with which standard?

Question 4 4.

An auxiliary electric-resistance heater is field installed within the enclosure of listed heating and cooling equipment. Which standard must this field-installed auxiliary heater be listed and labeled in accordance with?

Question 5 5.

A mechanical contractor proposes changing the refrigerant in an existing commercial chill water system to a different refrigerant designation within a different safety group. What approval is required for this change?

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